Joannes
Martyrological notice
The historical Roman Martyrology commemorates Joannes on 27 March. The Latin notice identifies the record as hermit. The source places the commemoration at In Agypto.
Historical martyrology witness · Martyrologium Romanum (Latin historical edition)
In Agypto sancti Joannis Eremitae, magnae sanctitatis viri, qui, inter cetera virtutum insignia, etiam prophetico spiritu plenus, Theodosio Imperatori victorias de tyrannis Maximo et Eugenio praedixit.
Martyrologium Romanum · Latin witness
Sancti Joannis Damasceni, Presbyteri, Confessoris et Ecclesiae Doctoris, cujus dies natalis agitur pridie Nonas Maji.